Traffic crashes kill and injure millions worldwide every year and are a major drain on economic development. Improving road safety would produce huge payoffs, especially in lower-income countries.

Parks and refuges are important for conservation, but without connections, they’re like islands. Linking them by protecting land in between makes it possible for wildlife to move over bigger areas.

Tourism revenues account for almost 10% of Costa Rica’s gross domestic product. New research shows that charismatic wildlife is necessary but not sufficient to attract ecotourists.

Your GPS may give you the fastest route to get to where you're going. But that doesn't mean it will be the safest one.

London was rated 2021’s most congested city.

Alaska is warming faster than any other U.S. state, and that’s causing problems, a team of bridge engineers and social scientists explains. The infrastructure bill in Congress would offer some help.

Alaska is warming faster than any other U.S. state. That’s causing problems for river crossings, as a team of bridge engineers and social scientists explains.

China’s Belt and Road initiative offers advantages and drawbacks for renewable energy development worldwide.

Bats roost under bridges and culverts across North America, so highway departments have to check for them before repairing bridges. A new AI tool makes those inspections faster and more accurate.

Through its Belt and Road Initiative, China has become the world’s largest country-to-country lender. A new study shows that more than half of its loans threaten sensitive lands or Indigenous people.